EP 2188514 A1 20100526 - TURBOSHAFT ENGINE WITH REDUCED NOISE EMISSION FOR AIRCRAFT
Title (en)
TURBOSHAFT ENGINE WITH REDUCED NOISE EMISSION FOR AIRCRAFT
Title (de)
TURBOMOTOR MIT REDUZIERTER SCHALLEMISSION FÜR FLUGZEUGE
Title (fr)
TURBOMOTEUR À ÉMISSION DE BRUIT RÉDUITE POUR AÉRONEF
Publication
Application
Priority
- FR 2008001166 W 20080804
- FR 0705875 A 20070817
Abstract (en)
[origin: WO2009053555A1] According to the invention, a plurality of embossments (20) having a rectangular section is provided at the inner periphery of the outlet opening (7) of the fan duct (12), said embossments being separated by longitudinal channels (21) having a convergent (22C) and a divergent (22D) for the cold flow (9).
IPC 8 full level
F02K 1/48 (2006.01)
CPC (source: EP US)
F02K 1/48 (2013.01 - EP US); Y02T 50/60 (2013.01 - EP US)
Citation (search report)
See references of WO 2009053555A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
FR 2920035 A1 20090220; FR 2920035 B1 20130906; BR PI0814484 A2 20151103; BR PI0814484 A8 20181211; CA 2695626 A1 20090430; CA 2695626 C 20150331; CN 101970843 A 20110209; CN 101970843 B 20131225; EP 2188514 A1 20100526; EP 2188514 B1 20170412; JP 2010537098 A 20101202; JP 5023213 B2 20120912; RU 2010109892 A 20110927; RU 2451814 C2 20120527; US 2012117939 A1 20120517; US 8544278 B2 20131001; WO 2009053555 A1 20090430
DOCDB simple family (application)
FR 0705875 A 20070817; BR PI0814484 A 20080804; CA 2695626 A 20080804; CN 200880103755 A 20080804; EP 08843033 A 20080804; FR 2008001166 W 20080804; JP 2010520607 A 20080804; RU 2010109892 A 20080804; US 67304208 A 20080804